lapilli
La*pil"li, n. pl. Etym: [L. lapillus a little stone, dim. of lapis stone.] (Min.) Defn: Volcanic ashes, consisting of small, angular, stony fragments or particles.
La*pil"li, n. pl. Etym: [L. lapillus a little stone, dim. of lapis stone.] (Min.) Defn: Volcanic ashes, consisting of small, angular, stony fragments or particles.